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Astron. Astrophys. 351, L10-L14 (1999)


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Letter to the Editor

Limits on the density of compact objects from high redshift supernovae

U. Seljak 1 and D.E. Holz 2

1 Princeton University, Department of Physics, Princeton, NJ 08544, USA
2 Albert-Einstein-Institut, Max-Planck-Institut für Gravitationsphysik, Am Mühlenberg 5, 14476 Golm, Germany

Received 13 August 1999 / Accepted 19 September 1999

Abstract

Due to the effects of gravitational lensing, the magnification distribution of high redshift supenovae can be a powerful discriminator between smooth dark matter and dark matter consisting of compact objects. We use high resolution N-body simulations in combination with the results of simulations with compact objects to determine the magnification distribution for a Universe with an arbitrary fraction of the dark matter in compact objects. Using these distributions we determine the number of type Ia SNe required to measure the fraction of matter in compact objects. A 20% determination of the matter fraction is possible with 100-400 well measured SNe at [FORMULA] (assuming the background cosmological model is well determined).

Key words: cosmology: miscellaneous – cosmology: gravitational lensing


© European Southern Observatory (ESO) 1999

Online publication: November 2, 1999

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